TLC372MD
Texas Instruments
IC COMPARATOR 2 DIFF 8SOIC
Trong kho40340 pcs
4V ~ 16V, ±2V ~ 8V
5mV @ 5V
5pA @ 5V
20mA
400µA
-
-
-
2
TLC372
Tube
LinCMOS™
-55°C ~ 125°C
Surface Mount
Differential
CMOS, MOS, Open-Drain, TTL
8-SOIC (0.154', 3.90mm Width)
8-SOIC
RFQ
LM393MX
Fairchild Semiconductor
LM393-N LOW POWER LOW OFFSET VOL
Trong kho3750 pcs
-
-
-
-
-
-
-
-
-
-
Bulk
*
-
-
-
-
-
-
RFQ
LM339D
onsemi
IC COMPARATOR 4 GEN PUR 14SO
Trong kho129590 pcs
2V ~ 32V, ±1V ~ 16V
5mV @ 30V
0.25µA @ 5V
16mA @ 5V
2.5mA
-
-
-
4
-
Tube
-
0°C ~ 70°C
Surface Mount
General Purpose
CMOS, DTL, ECL, MOS, Open-Collector, TTL
14-SOIC (0.154", 3.90mm Width)
14-SO
RFQ
MAX996ESD+T
Analog Devices Inc./Maxim Integrated
IC COMPARATOR 4 GEN PUR 14SOIC
Trong kho17477 pcs
2.5V ~ 5.5V, ±1.25V ~ 2.75V
5mV @ 5.5V
1pA @ 5.5V
-
96µA
80dB CMRR, 80dB PSRR
210ns
±2.5mV
4
MAX996
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
General Purpose
CMOS, Open-Drain, Rail-to-Rail, TTL
14-SOIC (0.154', 3.90mm Width)
14-SOIC
RFQ
KA2901
Fairchild Semiconductor
IC COMPARATOR 4 GEN PUR 14DIP
Trong kho192740 pcs
2V ~ 36V, ±1V ~ 18V
7mV @ 5V
0.25µA @ 5V
18mA @ 5V
2.5mA
-
-
-
4
-
Bulk
KA2901
-40°C ~ 85°C
Through Hole
General Purpose
Open Collector
14-DIP (0.300", 7.62mm)
14-PDIP
RFQ
LM2903VQPWRQ1
Texas Instruments
IC COMPARATOR 2 DIFF 8TSSOP
Trong kho114720 pcs
2V ~ 36V, ±1V ~ 18V
7mV @ 5V
0.25µA @ 5V
20mA
2.5mA
-
-
-
2
LM2903
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C
Surface Mount
Differential
CMOS, MOS, Open-Collector, TTL
8-TSSOP (0.173', 4.40mm Width)
8-TSSOP
RFQ
LM393DT
STMicroelectronics
IC COMPARATOR 2 GEN PUR 8SOIC
Trong kho359430 pcs
2V ~ 36V, ±1V ~ 18V
5mV @ 30V
0.25µA @ 5V
18mA @ 5V
2.5mA
-
-
-
2
LM393
Tape & Reel (TR)
-
0°C ~ 70°C
Surface Mount
General Purpose
CMOS, DTL, ECL, MOS, Open-Collector, TTL
8-SOIC (0.154', 3.90mm Width)
8-SOIC
RFQ
TLV3201AIDCKR
Texas Instruments
IC COMPARATOR 1 GEN PUR SC70-5
Trong kho58250 pcs
2.7V ~ 5.5V
1mV @ 5V
0.005µA @ 5V
-
40µA
70dB CMRR, 85dB PSRR
50ns
1.2mV
1
TLV3201
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
Push-Pull
5-TSSOP, SC-70-5, SOT-353
SC-70-5
RFQ
LM239DT
STMicroelectronics
IC COMPARATOR 4 GEN PUR 14SO
Trong kho100350 pcs
2V ~ 32V, ±1V ~ 16V
5mV @ 30V
0.25µA @ 5V
16mA @ 5V
2mA
-
-
-
4
LM239
Tape & Reel (TR)
-
-40°C ~ 105°C
Surface Mount
General Purpose
CMOS, DTL, ECL, MOS, Open-Collector, TTL
14-SOIC (0.154", 3.90mm Width)
14-SO
RFQ
TLV1702AIDGKR
Texas Instruments
IC COMPARATOR 2 GEN PUR 8VSSOP
Trong kho49760 pcs
2.2V ~ 36V, ±1.1V ~ 18V
3.5mV
0.015µA
20mA
75µA
-
560ns
-
2
TLV1702
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
Open Collector
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
8-VSSOP
RFQ
TLV1701AIDRLT
Texas Instruments
IC COMPARATOR 1 GEN PUR SOT5
Trong kho39268 pcs
2.2V ~ 36V, ±1.1V ~ 18V
3.5mV
0.015µA
20mA
75µA
-
560ns
-
1
TLV1701
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
Open Collector
SOT-553
SOT-5
RFQ
LM339AN
Texas Instruments
IC COMPARATOR 4 DIFF 14DIP
Trong kho251250 pcs
2V ~ 30V, ±1V ~ 15V
3mV @ 30V
0.25µA @ 5V
20mA
2.5mA
-
-
-
4
LM339
Tube
-
0°C ~ 70°C
Through Hole
Differential
CMOS, MOS, Open-Collector, TTL
14-DIP (0.300", 7.62mm)
14-PDIP
RFQ
MAX917EUK-T
Analog Devices Inc./Maxim Integrated
IC COMPARATOR 1 W/VOLT REF SOT23
Trong kho13530 pcs
1.8V ~ 5.5V
5mV @ 5V
0.001µA @ 5V
50mA
1.6µA
80dB PSRR
95µs
4mV
1
MAX917
Tape & Reel (TR)
Beyond-the-Rails™
-40°C ~ 85°C
Surface Mount
with Voltage Reference
CMOS, Push-Pull, Rail-to-Rail, TTL
SC-74A, SOT-753
SOT-23-5
RFQ
MCP6566T-E/LT
Microchip Technology
IC COMPARATOR 1 GEN PUR SC70-5
Trong kho86310 pcs
1.8V ~ 5.5V
10mV @ 5.5V
1pA @ 5.5V
50mA
130µA
66dB CMRR, 70dB PSRR
80ns
5mV
1
MCP6566
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
CMOS, Open-Drain
5-TSSOP, SC-70-5, SOT-353
SC-70-5
RFQ
LTC6702ITS8#TRMPBF
Analog Devices Inc.
IC COMPARATOR 2 GEN PUR TSOT23-8
Trong kho18657 pcs
1.7V ~ 5.5V
3.5mV @ 3V
-
-
32µA
70dB CMRR, 65dB PSRR
450ns
5mV
2
LTC6702
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
General Purpose
CMOS, Push-Pull, Rail-to-Rail, TTL
SOT-23-8 Thin, TSOT-23-8
TSOT-23-8
RFQ
BA10393
Rohm Semiconductor
IC COMPARATOR 2 GEN PUR 8DIP
Trong kho17560 pcs
2V ~ 36V, ±1V ~ 18V
5mV @ 5V
0.25µA @ 5V
16mA @ 5V
1mA
-
-
-
2
BA10393
Tube
-
-40°C ~ 85°C
Through Hole
General Purpose
Open Collector
8-DIP (0.300", 7.62mm)
8-DIP
RFQ
TLV9034RTER
Texas Instruments
IC COMPARATOR 4 GEN PUR 16WQFN
Trong kho45540 pcs
1.65V ~ 5.5V
1.5mV @ 5V
5pA @ 5V
100mA @ 5V
30µA
70dB CMRR, 95dB
115ns
-
4
TLV9034
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
Rail-to-Rail
16-WFQFN Exposed Pad
16-WQFN (3x3)
RFQ
LTC1440CMS8#TRPBF
Analog Devices Inc.
IC COMPARATOR 1 W/VOLT REF 8MSOP
Trong kho14839 pcs
2V ~ 11V, ±1V ~ 5.5V
10mV @ 5V
-
40mA
4.4µA
80dB CMRR, 80dB PSRR
15µs
50mV
1
LTC1440
Tape & Reel (TR)
-
0°C ~ 70°C
Surface Mount
with Voltage Reference
CMOS, TTL
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
8-MSOP
RFQ
LT1713IMS8#PBF
Analog Devices Inc.
IC COMPARATOR 1 W/LATCH 8MSOP
Trong kho8952 pcs
2.4V ~ 12V, ±2.4V ~ 6V
4mV @ 5V
2µA @ 5V
20mA
7.5mA
70dB CMRR, 80dB PSRR
11ns
-
1
LT1713
Tube
UltraFast™
-40°C ~ 85°C
Surface Mount
with Latch
CMOS, Complementary, Rail-to-Rail, TTL
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
8-MSOP
RFQ
TS331IYLT
STMicroelectronics
IC COMPARATOR 1 GEN PUR SOT23-5
Trong kho69920 pcs
1.6V ~ 5V
5mV @ 5V
0.04µA @ 5V
93mA @ 5V
26µA
79dB CMRR
720ns
-
1
TS331
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C
Surface Mount
General Purpose
Open Drain
SC-74A, SOT-753
SOT-23-5
RFQ
MAX9034AUD
Analog Devices Inc./Maxim Integrated
IC COMPARATOR 4 GEN PUR 14TSSOP
Trong kho12020 pcs
2.5V ~ 5.5V
1mV @ 5V
0.008µA @ 5V
-
55µA
100dB CMRR, 100dB PSRR
228ns
4mV
4
MAX9034
Tube
-
-40°C ~ 125°C
Surface Mount
General Purpose
CMOS, Rail-to-Rail, TTL
14-TSSOP (0.173", 4.40mm Width)
14-TSSOP
RFQ
LM239PWR
Texas Instruments
IC COMPARATOR 4 DIFF 14TSSOP
Trong kho215870 pcs
2V ~ 30V, ±1V ~ 15V
5mV @ 30V
0.25µA @ 5V
20mA
2mA
-
-
-
4
LM239
Tape & Reel (TR)
-
-25°C ~ 85°C
Surface Mount
Differential
CMOS, MOS, Open-Collector, TTL
14-TSSOP (0.173', 4.40mm Width)
14-TSSOP
RFQ
BA2903HFVM-CTR
Rohm Semiconductor
IC COMPARATOR 2 GEN PUR 8MSOP
Trong kho48570 pcs
2V ~ 36V, ±1V ~ 18V
7mV @ 5V
0.25µA @ 5V
16mA @ 5V
1mA
-
-
-
2
BA2903
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
Open Collector
8-VSSOP, 8-MSOP (0.110", 2.80mm Width)
8-MSOP
RFQ
TLV6703DDCR
Texas Instruments
IC COMPARATOR 1 GEN PUR SOT23
Trong kho55560 pcs
1.8V ~ 18V
-
-
-
13µA
-
-
12mV
1
TLV6703
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
Open Drain
SOT-23-6 Thin, TSOT-23-6
SOT-23-THIN
RFQ
MAX9019EKA
Analog Devices Inc./Maxim Integrated
DUAL, 1.8V,NANOPOWER COMPARATOR
Trong kho34831 pcs
-
-
-
-
-
-
-
-
-
MAX9019
Bulk
*
-
-
-
-
-
-
RFQ
BA2903SFVM-TR
Rohm Semiconductor
IC COMPARATOR 2 GEN PUR 8MSOP
Trong kho175270 pcs
2V ~ 36V, ±1V ~ 18V
7mV @ 5V
0.25µA @ 5V
16mA @ 5V
1mA
-
-
-
2
BA2903
Tape & Reel (TR)
-
-40°C ~ 105°C
Surface Mount
General Purpose
Open Collector
8-VSSOP, 8-MSOP (0.110', 2.80mm Width)
8-MSOP
RFQ
LT6700MPS6-1#TRPBF
Analog Devices Inc.
IC COMPARATR 2 W/VOLT REF TSOT23
Trong kho6641 pcs
1.4V ~ 18V
-
0.05µA
-
19µA
-
29µs
13.5mV
2
LT6700
Tape & Reel (TR)
Over-The-Top®
-55°C ~ 125°C
Surface Mount
with Voltage Reference
Open Collector
SOT-23-6 Thin, TSOT-23-6
TSOT-23-6
RFQ
MIC841NYC5-TR
Microchip Technology
IC COMPARATOR 1 W/VOLT REF SC70
Trong kho73250 pcs
1.5V ~ 5.5V
-
-
20mA
3µA
-
12µs
20mV
1
MIC841
Tape & Reel (TR)
Teeny™
-40°C ~ 85°C
Surface Mount
with Voltage Reference
Open Drain
5-TSSOP, SC-70-5, SOT-353
SC-70-5
RFQ
LM306D
Texas Instruments
IC COMPARATOR 1 DIFF 8SOIC
Trong kho21721 pcs
±7.5V ~ 12V
5mV @ ±12V
40µA @ ±12V
-
10mA
-
-
-
1
LM306
Tube
-
0°C ~ 70°C
Surface Mount
Differential
Push-Pull, TTL
8-SOIC (0.154', 3.90mm Width)
8-SOIC
RFQ
TSM921CUA+T
Touchstone Semiconductor
IC COMPARATOR
Trong kho82910 pcs
2.5V ~ 11V, ±1.25V ~ 5.5V
10mV @ 2.5V
-
40mA
3.2µA
80dB CMRR, 80dB PSRR
12µs
50mV
1
-
Cut Tape (CT)
-
0°C ~ 70°C
Surface Mount
with Voltage Reference
CMOS, Push-Pull, TTL
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
8-MSOP
RFQ
TLV3491AIDR
Texas Instruments
IC COMPARATOR 1 GEN PUR 8SOIC
Trong kho65130 pcs
1.8V ~ 5.5V
15mV @ 5.5V
10pA @ 5.5V
-
1.2µA
74dB CMRR, 69.12dB PSRR
13.5µs
-
1
TLV3491
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
CMOS, Push-Pull, Rail-to-Rail
8-SOIC (0.154", 3.90mm Width)
8-SOIC
RFQ
TLV4041R1YKAR
Texas Instruments
IC COMPARATOR 1 GEN PUR 4DSBGA
Trong kho81760 pcs
1.6V ~ 5.5V
-
10pA @ 5V
50mA @ 5V
3.5µA
-
360ns
20mV
1
TLV4041
Tape & Reel (TR)
-
-40°C ~ 125°C (TA)
Surface Mount
General Purpose
Push-Pull, Rail-to-Rail
4-XFBGA, DSBGA
4-DSBGA
RFQ
LMV339DTBR2G
onsemi
IC COMPARATOR 4 GEN PUR 14TSSOP
Trong kho111830 pcs
2.7V ~ 5V
9mV @ 5V
0.001µA @ 5V
84mA @ 5V
350µA
-
1.5µs
-
4
LMV339
Tape & Reel (TR)
-
-
Surface Mount
General Purpose
Open Drain
14-TSSOP (0.173', 4.40mm Width)
14-TSSOP
RFQ
NJM319V-TE2
Nisshinbo Micro Devices Inc.
IC COMPARATOR 2 GEN PUR 14SSOP
Trong kho4070 pcs
5V ~ 18V, ±5V ~ 18V
8mV @ ±15V
1µA @ ±15V
25mA
12.5mA
-
-
-
2
-
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
General Purpose
Open-Collector, DTL, RTL, TTL
14-LSSOP (0.173", 4.40mm Width)
14-SSOP
RFQ
AD8564ARUZ-REEL
Analog Devices Inc.
IC COMPARATOR 4 GEN PUR 16TSSOP
Trong kho4577 pcs
-
7mV @ 5V
4µA @ 5V
-
14mA, 14mA, 7mA
85dB CMRR, 80dB PSRR
9.8ns
-
4
AD8564
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
General Purpose
CMOS, TTL
16-TSSOP (0.173", 4.40mm Width)
16-TSSOP
RFQ
LM2903DT
STMicroelectronics
IC COMPARATOR 2 GEN PUR 8SOIC
Trong kho182460 pcs
2V ~ 36V, ±1V ~ 18V
7mV @ 5V
0.25µA @ 5V
16mA @ 5V
2.5mA
-
-
-
2
LM2903
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
CMOS, DTL, ECL, MOS, Open-Collector, TTL
8-SOIC (0.154', 3.90mm Width)
8-SOIC
RFQ
TS7211BILT
STMicroelectronics
IC COMPARATOR 1 GEN PUR SOT23-5
Trong kho35590 pcs
2.7V ~ 10V
15mV @ 5V
3pA @ 5V
30mA
12µA
70dB CMRR, 80dB PSRR
-
-
1
TS7211
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
General Purpose
Push-Pull
SC-74A, SOT-753
SOT-23-5
RFQ
TLC352IPWR
Texas Instruments
IC COMPARATOR 2 DIFF 8TSSOP
Trong kho56390 pcs
1.4V ~ 16V, ±0.7V ~ 8V
5mV @ 5V
5pA @ 5V
20mA
400µA
-
-
-
2
TLC352
Tape & Reel (TR)
LinCMOS™
-40°C ~ 85°C
Surface Mount
Differential
CMOS, MOS, Open-Drain, TTL
8-TSSOP (0.173", 4.40mm Width)
8-TSSOP
RFQ
LM2901M
Texas Instruments
IC COMPARATOR 4 GEN PUR 14SOIC
Trong kho24254 pcs
2V ~ 36V, ±1V ~ 18V
7mV @ 30V
0.25µA @ 5V
16mA @ 5V
2.5mA
-
-
-
4
LM2901
Tube
-
-40°C ~ 85°C
Surface Mount
General Purpose
CMOS, DTL, ECL, MOS, Open-Collector, TTL
14-SOIC (0.154', 3.90mm Width)
14-SOIC
RFQ
MAX933ESA
Analog Devices Inc./Maxim Integrated
IC COMPARATOR 2 W/VOLT REF 8SOIC
Trong kho6280 pcs
2.5V ~ 11V, ±1.25V ~ 5.5V
10mV @ 5V
-
25µA @ 5V
4.5µA
-80dB, -80dB
12µs (Typ)
-
2
MAX933
Bulk
-
-40°C ~ 85°C
Surface Mount
with Voltage Reference
Push-Pull, CMOS, TTL
8-SOIC (0.154", 3.90mm Width)
8-SOIC
RFQ
MCP6564-E/ST
Microchip Technology
IC COMPARATOR 4 GEN PUR 14TSSOP
Trong kho23153 pcs
1.8V ~ 5.5V
10mV @ 5.5V
1pA @ 5.5V
50mA
130µA
66dB CMRR, 70dB PSRR
80ns
5mV
4
MCP6564
Tube
-
-40°C ~ 125°C
Surface Mount
General Purpose
CMOS, Push-Pull, Rail-to-Rail, TTL
14-TSSOP (0.173", 4.40mm Width)
14-TSSOP
RFQ
LMV393IDR
Texas Instruments
IC COMPARATOR 2 GEN PUR 8SOIC
Trong kho121100 pcs
2.7V ~ 5.5V
7mV @ 5V
0.25µA @ 5V
84mA @ 5V
250µA
-
600ns
-
2
LMV393
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
General Purpose
Open Collector
8-SOIC (0.154", 3.90mm Width)
8-SOIC
RFQ
MIC833YM5-TR
Microchip Technology
IC COMPARATOR 1 W/VOLT REF SOT23
Trong kho86710 pcs
1.5V ~ 5.5V
-
-
20mA
-
-
5µs
-
1
MIC833
Tape & Reel (TR)
IttyBitty®
-40°C ~ 85°C
Surface Mount
with Voltage Reference
Open Drain
SC-74A, SOT-753
SOT-23-5
RFQ
LM211DR
Texas Instruments
IC COMPARATOR 1 GEN PUR 8SOIC
Trong kho178700 pcs
3.5V ~ 30V, ±1.75V ~ 15V
3mV @ ±15V
0.1µA @ ±15V
50mA
6mA
-
-
-
1
LM211
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
General Purpose
DTL, MOS, Open-Collector, Open-Emitter, RTL, TTL
8-SOIC (0.154", 3.90mm Width)
8-SOIC
RFQ
KA2903DMTF
onsemi
IC COMPARATOR 2 DIFF 8SOIC
Trong kho3720 pcs
2V ~ 36V, ±1V ~ 18V
7mV @ 5V
0.25µA @ 5V
16mA @ 5V
2.5mA
-
-
-
2
KA2903
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
Differential
-
8-SOIC (0.154", 3.90mm Width)
8-SOIC
RFQ
MCP6541RT-E/OT
Microchip Technology
IC COMPARATOR 1 GEN PUR SOT23-5
Trong kho113420 pcs
1.6V ~ 5.5V
7mV @ 5.5V
1pA @ 5.5V
30mA
1µA
70dB CMRR, 80dB PSRR
8µs
6.5mV
1
MCP6541
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
General Purpose
CMOS, Push-Pull, Rail-to-Rail, TTL
SC-74A, SOT-753
SOT-23-5
RFQ
MAX9013ESA+T
Analog Devices Inc./Maxim Integrated
IC COMPARATOR 1 W/LATCH 8SOIC
Trong kho11623 pcs
4.5V ~ 5.5V
3mV @ 5.5V
0.5µA @ 5V
40mA
2.3mA
95dB CMRR, 82dB PSRR
9ns
-
1
MAX9013
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
with Latch
Complementary, TTL
8-SOIC (0.154', 3.90mm Width)
8-SOIC
RFQ
LM393M
onsemi
IC COMPARATOR 2 DIFF 8SOIC
Trong kho11310 pcs
2V ~ 36V, ±1V ~ 18V
5mV @ 5V
0.25µA @ 5V
18mA @ 5V
2.5mA
-
-
-
2
LM393
Tube
-
0°C ~ 70°C
Surface Mount
Differential
-
8-SOIC (0.154", 3.90mm Width)
8-SOIC
RFQ
MAX996ESD
Analog Devices Inc./Maxim Integrated
IC COMPARATOR 4 GEN PUR 14SOIC
Trong kho5520 pcs
2.5V ~ 5.5V, ±1.25V ~ 2.75V
5mV @ 5.5V
1pA @ 5.5V
-
96µA
80dB CMRR, 80dB PSRR
210ns
±2.5mV
4
MAX996
Tube
-
-40°C ~ 85°C
Surface Mount
General Purpose
CMOS, Open-Drain, Rail-to-Rail, TTL
14-SOIC (0.154", 3.90mm Width)
14-SOIC
RFQ
LT1720CMS8#TRPBF
Analog Devices Inc.
IC COMPARATOR 2 GEN PUR 8MSOP
Trong kho6550 pcs
2.7V ~ 6V
3mV @ 5V
6µA @ 5V
20mA
7mA
70dB CMRR, 80dB PSRR
10ns
7mV
2
LT1720
Tape & Reel (TR)
UltraFast™
0°C ~ 70°C
Surface Mount
General Purpose
CMOS, Rail-to-Rail, TTL
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
8-MSOP
RFQ